BDN AutoShip Terms BDN AutoShip Terms By signing up for the Big Dog Natural AutoShip Program, I authorize Big Dog Natural to charge my preferred credit card. Any change or cancellation of your order has to be sent to us at least 2 days prior to the shipping date. BDN Autoship discount cannot be combined with any other offers or discounts. Get 40% off your first AutoShip order, with a maximum of $30 and get 10% off on all following orders. By signing up for the Big Dog Natural AutoShip Program, I authorize Big Dog Natural to charge my preferred credit card. Any change or cancellation of your order has to be sent to us at least 2 days prior to the shipping date. BDN Autoship discount cannot be combined with any other offers or discounts. Get 40% off your first AutoShip order, with a maximum of $30 and get 10% off on all following orders.